bison - GNU Project parser generator (yacc replacement)
bison [ -b file-prefix ] [ --file-prefix=file-prefix ] [ -d ] [ --defines=defines-file ] [ -g ] [ --graph=graph-file ] [ -k ] [ --token-table ] [ -l ] [ --no-lines ] [ -n ] [ --no-parser ] [ -o out_file ] [ --output-file=outfile ] [ -p prefix ] [ --name-prefix=prefix ] [ -t ] [ --debug ] [ -v ] [ --verbose ] [ -V ] [ --version ] [ -y ] [ --yacc ] [ -h ] [ --help ] [ --fixed-output-files ] file yacc [ similar options and operands ]
Bison is a parser generator in the style of yacc(1) . It should be upwardly compatible with input files designed for yacc.
Input files should follow the yacc convention of ending in .y. Unlike yacc, the generated files do not have fixed names, but instead use the prefix of the input file. Moreover, if you need to put C++ code in the input file, you can end his name by a C++-like extension (.ypp or .y++), then bison will follow your extension to name the output file (.cpp or .c++). For instance, a grammar description file named parse.yxx would produce the generated parser in a file named parse.tab.cxx, instead of yacc’s y.tab.c or old Bison version’s parse.tab.c.
This description of the options that can be given to bison is adapted from the node Invocation in the bison.texinfo manual, which should be taken as authoritative.
Bison supports both traditional single-letter options and mnemonic long option names. Long option names are indicated with -- instead of -. Abbreviations for option names are allowed as long as they are unique. When a long option takes an argument, like --file-prefix, connect the option name and the argument with =.
Specify a prefix to use for all bison output file names. The names are chosen as if the input file were named file-prefix.c.
If the parser output file is named name.c then this file is named name.h.
This output file is essential if you wish to put the definition of yylex in a separate source file, because yylex needs to be able to refer to token type codes and the variable yylval.
The other output files’ names are constructed from outfile as described under the -v and -d switches.
For example, if you use -p c, the names become cparse, clex, and so on.
This file also describes all the conflicts, both those resolved by operator precedence and the unresolved ones.
The file’s name is made by removing .tab.c or .c from the parser output file name, and adding .output instead.
Therefore, if the input file is foo.y, then the parser file is called foo.tab.c by default. As a consequence, the verbose output file is called foo.output.
bison -y “$@"
The Bison Reference Manual, included as the file bison.texinfo in the bison source distribution.
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